AUMI vs SILJ

Key Takeaways

• AUMI tracks the Solactive Global Pure Gold Miners Index, holding roughly 25–30 large gold-mining companies, while SILJ tracks the Nasdaq Junior Silver Miners Index with about 68 small-cap silver miners.
• The funds target different precious metals: AUMI is pure gold-mining exposure, whereas SILJ leans on silver producers with heavier industrial-demand sensitivity.
• AUMI is cheaper at a 0.35% net expense ratio versus 0.69% for SILJ, though SILJ offers far greater scale and liquidity.
• SILJ holds a substantial asset base of roughly $3.5 billion, while AUMI is a much smaller, newer fund with assets in the tens of millions of dollars.
• Risk profiles differ meaningfully: SILJ's junior, small-cap miners carry higher volatility and beta than AUMI's larger-cap gold producers.
• Tickeron AI Verdict: SILJ — favored for its deeper diversification, superior liquidity, established track record, and stronger relative trend momentum.

Introduction

Precious-metals equities have re-entered the spotlight as investors weigh inflation hedging, central-bank buying, and dollar weakness against an uncertain rate environment. The Themes Gold Miners ETF (AUMI) and the Amplify Junior Silver Miners ETF (SILJ) both offer equity exposure to the metals and mining complex, but they are not direct competitors. AUMI concentrates on larger-cap gold producers, while SILJ targets small-cap, often exploration-stage silver miners. Comparing these two funds helps investors evaluate how different metals, market capitalizations, and fund structures shape risk, return potential, and relative positioning within the same broad sector.

Themes Gold Miners ETF (AUMI) Overview

AUMI is a passively managed fund that seeks to track the Solactive Global Pure Gold Miners Index, which identifies the largest companies by market capitalization deriving their revenues primarily from gold mining. The portfolio is intentionally concentrated and non-diversified, typically holding roughly 25–30 names. Its top positions have recently included IAMGOLD Corp (about 5.5%), Zhaojin Mining Industry, Equinox Gold Corp, Northern Star Resources, AngloGold Ashanti, Kinross Gold Corp, and B2Gold Corp.

Because the index is dominated by gold-mining companies in the materials sector, AUMI's sector allocation is essentially 100% precious-metals mining, with meaningful geographic diversification across North America, Australia, and emerging markets. The fund carries a competitive net expense ratio of 0.35% and a relatively low portfolio turnover. Launched in late 2023, AUMI remains a smaller and younger product, which translates to lower daily trading volume and a thinner liquidity profile than more established peer funds.

Amplify Junior Silver Miners ETF (SILJ) Overview

SILJ is a passively managed fund that seeks to correlate, before fees and expenses, with the total return performance of the Nasdaq Junior Silver Miners Index. It is the first and only U.S.-listed ETF dedicated to small-cap silver miners, holding approximately 68 securities across producers, explorers, and royalty/streaming companies. Top holdings have recently included Hecla Mining (around 11%), Coeur Mining (around 10.8%), First Majestic Silver (around 10.6%), Wheaton Precious Metals (around 5.6%), and SSR Mining (around 4.8%).

The index uses a thematic market-capitalization weighting and is rebalanced quarterly. SILJ's expense ratio is 0.69%, reflecting the specialized, less-liquid nature of its junior-miner universe. With net assets exceeding $3 billion and more than a decade of operating history since its 2012 launch, SILJ provides substantially deeper liquidity and a broader, more diversified portfolio than AUMI — albeit with a clear small-cap tilt that amplifies both upside and downside volatility.

Industry and Thematic Backdrop

Both funds sit within the precious-metals equity complex, which is driven by real interest rates, the U.S. dollar, and physical metal prices. Gold has benefited from sustained central-bank accumulation and its role as a monetary safe haven, supporting the large-cap miners that dominate AUMI. Silver, by contrast, carries a dual identity: it is both a monetary metal and an industrial input used in solar panels, electronics, and electric-vehicle components. This gives SILJ additional exposure to manufacturing and green-energy demand cycles, but also ties its performance more closely to global growth and industrial activity.

Rising gold and silver prices in recent cycles have widened profit margins for miners, while higher financing costs and permitting challenges continue to pressure junior explorers. Silver's smaller market and concentrated junior universe make SILJ more sensitive to these swings than AUMI's established producers.

Performance and Positioning Comparison

Over recent weeks and months, both funds have benefited from firm precious-metals prices, but their return and volatility profiles have diverged. SILJ's junior, small-cap silver miners have generally exhibited sharper moves — both up and down — than AUMI's larger-cap gold producers, reflecting silver's industrial beta and the operating leverage inherent in smaller miners. AUMI has offered steadier, more defensive positioning tied to gold's safe-haven appeal.

From a structural standpoint, SILJ's 68 holdings provide broader diversification than AUMI's concentrated ~25–30-name portfolio, yet its small-cap bias introduces higher single-stock and liquidity risk. AUMI's lower 0.35% fee is a durable cost advantage, but its thin trading volume and modest asset base create wider potential premiums and discounts to net asset value (NAV, the per-share value of a fund's holdings). For investors prioritizing liquidity and trend consistency, SILJ's scale and momentum have been the more compelling relative story in recent cycles.

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Tickeron AI Verdict

Based on observable structural factors, Tickeron's AI would currently favor SILJ over AUMI. The verdict rests primarily on SILJ's dramatically larger asset base and liquidity, its deeper 68-holding diversification, a much longer operating track record, and stronger relative trend momentum within the silver-mining space. While AUMI holds a genuine cost advantage at 0.35% versus 0.69%, its smaller scale, concentrated portfolio, and thinner trading volume weigh on its relative positioning. This assessment is probabilistic and grounded in measurable fund characteristics rather than a guarantee of future returns.

Disclaimer

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